Free Online Audio Transcribers: Top 5 Browser Tools (2024)

April 5, 2026

Free Online Audio Transcribers: Top 5 Browser Tools (2024) | AI Transcription Service - Mr. Transcription

Table of Contents

    If you need free transcription, we recommend Mojio!

    Try it now

    Are you looking for a transcription tool, but don't want an "app" or "PC software"?

    For you, we've compiled a list of recommended transcription tools that can be used directly from your browser, without needing apps or software.

    dog
    I'm looking for a website (homepage) that can do online transcription.
    When I search online, all I find are smartphone apps or PC software that require installation...
    cat
    dog
    Tell me about free transcription tools that are easy to use from a browser!

    This information is perfect for such situations.

    Transcription tools generally fall into three main types:

    • Smartphone apps
    • PC software (installation-based)
    • Web apps (transcription websites usable in a browser)

    Each of these three has different features and strengths, so the optimal choice varies depending on the usage scenario and purpose.

    Therefore, this time, we will focus exclusively on online transcription websites that can be easily used from a browser just by visiting the site, without choosing installation-based apps or software!

    Even though they are free tools, they utilize the latest technology.

    Some of them are actively used by large corporations and professional writers.

    By reading this article, you'll be able to transcribe any audio data, whether it's voice, video, English, or MP3 files, directly from your browser, undoubtedly boosting your work efficiency many times over.

    Please read to the end.

    【Comparison Chart】5 Recommended Free Online Audio Transcription Websites

    We've summarized the 5 transcription websites introduced this time by their free tier, supported formats, and features. Please take a look at this comparison chart first.

    Service NameFree TierSupported FormatsAI Summary/MinutesSRT Subtitle OutputBest For
    Mr. Transcription3 min/session (no registration required)Audio, Video, Image, PDF (mp3, mp4, wav, jpg, pdf, etc.)If in doubt, choose this. An all-rounder for audio, video, images, English, and more.
    AutoMemo1 hour per monthAudio/Video files (mp3, wav, mp4, mov, etc.)△ (Summary only)×People who want to transcribe audio recorded with a voice recorder (mp3, etc.)
    SloosFree (unlimited time)Real-time audio××People who want to automatically create meeting minutes
    Otter300 minutes/month (limited)Real-time audio, audio files××People who want to transcribe English meetings/interviews
    Google DocsFreeReal-time voice input only××People who want to convert spoken content to text immediately (cannot transcribe recorded data)

    Verification Environment (as of March 2026)
    Devices used: Windows 11 PC (Chrome) / iPhone 15 (Safari)
    Test audio: Japanese meeting audio (3 min), English interview (3 min), mp3 file
    Evaluation criteria: Transcription accuracy, processing speed, ease of operation

    Now, let's delve into the features of each site!

    5 Recommended Online Transcription Websites Usable from a Browser 【Free Options Available】

    1. Mr. Transcription | A Site for Transcribing Audio, Video, Images, and PDFs with the Latest AI

    Mr. Transcription

    'Mr. Transcription' is an all-purpose transcription website using the latest AI.

    Leveraging rapidly advancing AI, it can transcribe with high accuracy in a short time simply by uploading files from your browser.

    Furthermore, its ability to transcribe and extract text from various media files, not just audio, is another recommended feature.

    • Audio: mp3, wav, wma, m4a, aifc, flac, aac, aiff
    • Video: mp4, mov, avi, flv, mkv, webm, wmv, 3gp
    • Image: jpg, jpeg, png, webp
    • Document: pdf

    It supports a very wide range of file formats.

    Mr. Transcription's supported files and file sizes. How to make unsupported files supported

    Mr. Transcription's Supported Files and File Sizes. How to Convert Unsupported Files

    We'll guide you through Mr. Transcription's supported files and what to do if your file is not supported.

    It employs a high-performance AI transcription engine, making it versatile for any audio.

    Not only does it offer highly accurate transcription with the latest AI, but it also completes processing for long audio in just about 1 minute!

    Supporting over 100 languages, it can easily transcribe English, Chinese, Korean, French, and other languages directly from your browser.

    It's also recommended for transcribing lyrics of foreign songs, such as English music.

    Of course, it can transcribe technical terms and includes features for managing and searching converted data.

    Furthermore, it boasts unique features not found on other transcription websites.

    • AI Summary & Meeting Minutes Creation: One-click summarization into 3 lines, meeting minutes creation, content analysis, and Q&A generation from transcription results (Learn more here)
    • SRT Subtitle File Output: Download video transcription results as SRT files, ready for immediate use as subtitles in Adobe Premiere or DaVinci Resolve (Learn more here)
    • Partial Playback & Editing Function: Play back specific parts of the audio to review and edit transcription results

    If you're unsure about the best transcription method, choosing 'Mr. Transcription' will cover most of your transcription needs!

    You can transcribe for free for up to 3 minutes a day without registration or login, just by opening the website in your browser.

    What's more, if you register an account, you can transcribe up to 10 minutes a day (maximum 3 minutes per file), so we recommend trying 'Mr. Transcription' first!

    2. AutoMemo | Transcription of Recorded Data (MP3)

    AutoMemo

    AutoMemo is an AI transcription service provided by SOURCENEXT Corporation.

    It can be used from a browser and is suitable for transcribing audio data (MP3 or WAV files) recorded with voice recorders or similar devices.

    It employs OpenAI's speech recognition model "Whisper," achieving high accuracy even in multi-speaker conversations.

    Supporting 72 languages, it can convert not only Japanese but also English and other languages' audio into text.

    Additionally, AutoMemo also sells dedicated voice recorder devices.

    The seamless integration where audio recorded by the recorder is automatically sent to the cloud and transcribed is also a compelling feature.

    The free tier allows up to 1 hour per month.

    For usage beyond that, a paid plan (starting from 1,480 yen/month) is required.

    AutoMemo

    3. Sloos | A Site for Creating Meeting Minutes from Your Browser

    Sloos

    Sloos is a transcription website specialized in creating meeting minutes.

    It can also be used from a browser.

    This web app is recommended for automatically generating meeting minutes.

    It can identify multiple speakers with a single microphone, making it easy to distinguish who said what when reviewing the audio later.

    The speech recognition accuracy is quite good, allowing for accurate transcription even in environments with some noise.

    It can also be used in conjunction with Zoom and Microsoft Teams, supporting the creation of minutes for remote meetings.

    Specializing in meeting minute creation, this recommended site offers very high performance in its area of expertise.

    Sloos

    4. Otter | A Transcription Site Strong in English

    otter

    Otter is a transcription website recommended for English audio.

    It features a proprietary AI speech recognition engine specialized in English, resulting in very high accuracy for English transcription.

    It also supports speaker identification, making it useful for business meetings with international partners.

    Although it's an overseas service, the Japanese version of the paid plan is sold by NTT Docomo, so you can use it with peace of mind.

    Most features are available in the free version, but some functionalities (like cloud storage and Zoom integration) are limited. For serious use, a paid plan is required.

    If you want to transcribe audio in languages other than English (such as Japanese), 'Mr. Transcription', which supports 100 languages, is recommended.

    Otter

    5. Google Docs | Free Real-time Voice Input from Your Browser

    Googledocs

    If you want to transcribe what you say in real-time directly in your browser, the classic Google Docs is an easy option.

    Even people who use Google Docs daily might not know about its "voice typing" feature, or if they do, they might not have used it much.

    It's easy to use: just open Google Docs in your browser, turn on the feature, and click the microphone button.

    You can also use the browser version on smartphones and tablets without installing an app.

    However, it has its weaknesses.

    Google Docs' voice typing is primarily for recognizing what you speak in real-time.

    It does not have a feature to play back recorded data (MP3 or WAV files) and convert it to text.

    While it's possible to transcribe recorded data with some clever workarounds, it requires somewhat complex settings, so it's recommended to use other sites like <

    ■ AI transcription service "Mr. Transscription"

    "Mr. Transcription" is an online transcription tool that can be used from zero initial cost and 1,000 yen per month (* free version available).

    • Supports more than 20 file formats such as audio, video, and images
    • Can be used from both PC and smartphone
    • Supports technical terms such as medical care, IT, and long-term care
    • Supports creation of subtitle files and speaker separation
    • Supports transcription in approximately 100 languages ​​including English, Chinese, Japanese, Korean, German, French, Italian, etc.

    To use it, just upload the audio file from the site. Transcription text is available in seconds to tens of minutes.
    You can use it for free if you transcribe it for up to 10 minutes, so please try it once.

    It is "Mr. Transcription" who can easily transcribe from audio, video, and images. Transcription allows you to transcribe for up to 10 minutes for free. You can copy, download, search, delete, etc. the transcribed text. You can also create subtitle files, which is ideal for transcription of interview videos.
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